Move all components/offline_pages/ files into component/offline_pages/core

components/offline_pages/background/network_quality_provider_stub.h

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef COMPONENTS_OFFLINE_PAGES_BACKGROUND_NETWORK_QUALITY_PROVIDER_STUB_H_
-#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_NETWORK_QUALITY_PROVIDER_STUB_H_
-
-#include "base/supports_user_data.h"
-#include "net/nqe/effective_connection_type.h"
-#include "net/nqe/network_quality_estimator.h"
-
-namespace offline_pages {
-
-// Test class stubbing out the functionality of NQE::NetworkQualityProvider.
-// It is only used for test support.
-class NetworkQualityProviderStub
-    : public net::NetworkQualityEstimator::NetworkQualityProvider,
-      public base::SupportsUserData::Data {
- public:
-  NetworkQualityProviderStub();
-  ~NetworkQualityProviderStub() override;
-
-  static NetworkQualityProviderStub* GetUserData(
-      base::SupportsUserData* supports_user_data);
-  static void SetUserData(base::SupportsUserData* supports_user_data,
-                          NetworkQualityProviderStub* stub);
-
-  net::EffectiveConnectionType GetEffectiveConnectionType() const override;
-
-  void AddEffectiveConnectionTypeObserver(
-      net::NetworkQualityEstimator::EffectiveConnectionTypeObserver* observer)
-      override;
-
-  void RemoveEffectiveConnectionTypeObserver(
-      net::NetworkQualityEstimator::EffectiveConnectionTypeObserver* observer)
-      override;
-
-  void SetEffectiveConnectionTypeForTest(net::EffectiveConnectionType type) {
-    connection_type_ = type;
-  }
-
- private:
-  net::EffectiveConnectionType connection_type_;
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_NETWORK_QUALITY_PROVIDER_STUB_H_